How to remove duplicate mails in outlook

There are a few ways to remove duplicate emails in Outlook:

Method 1: Using the "Mark as Duplicate" feature

1. Open Outlook and go to the folder that contains the duplicate emails (e.g., Inbox, Sent Items, etc.).
2. Select all the emails in the folder by pressing Ctrl+A.
3. Right-click on one of the selected emails and choose "Mark as Duplicate".
4. Outlook will automatically mark all the duplicate emails as "Duplicate" in the "Status" column.
5. You can then delete the marked emails by selecting them and pressing the Delete key.

Method 2: Using the "Remove Duplicates" add-in

1. Install the "Remove Duplicates" add-in from the Microsoft Store or download it from a reputable source.
2. Open Outlook and go to the folder that contains the duplicate emails.
3. Select all the emails in the folder by pressing Ctrl+A.
4. Click on the "Remove Duplicates" button in the ribbon or toolbar.
5. The add-in will analyze the emails and remove any duplicates.

Method 3: Using a VBA script

1. Open Outlook's Visual Basic Editor by pressing Alt+F11 or by navigating to Developer > Visual Basic.

2. In the Visual Basic Editor, create a new module by clicking "Insert" > "Module".

3. Paste the following code into the module:

   Sub RemoveDuplicates()
    Dim olFolder As MAPIFolder
    Dim olItems As Items
    Dim olItem As Object
    Dim i As Integer
   
    Set olFolder = Application.ActiveExplorer.CurrentFolder
    Set olItems = olFolder.Items
   
    For i = olItems.Count To 1 Step -1
        Set olItem = olItems.Item(i)
        If olItem.Class = olMail Then
            For Each duplicate In olItems
                If duplicate.Class = olMail And duplicate.Subject = olItem.Subject And duplicate.Body = olItem.Body Then
                    duplicate.Delete
                    Exit For
                End If
            Next
        End If
    Next
   End Sub

4. Save the module by clicking "File" > "Save" (or press Ctrl+S).

5. Close the Visual Basic Editor.

6. Go back to Outlook and select the folder that contains the duplicate emails.

7. Press Alt+F8 to open the Macro dialog box.

8. Select the "RemoveDuplicates" macro and click "Run".

Method 4: Using a third-party tool

There are many third-party tools available that can help you remove duplicate emails in Outlook, such as Duplicate Email Remover, Duplicate Killer, and more. These tools often offer more advanced features and options than the built-in methods.

Remember to always backup your Outlook data before attempting to remove duplicate emails, as this process can potentially delete important emails.